Clustal O (1.2.1) multiple amino acid sequence alignment and fragmentation spectrum of ZmEXPB6 peptide.
A, alignment between Z. mays (Zm) β-expansin (EXPB) 2 (AF332175), ZmEXPB3 (AF332176), ZmEXPB4 (AF332177), ZmEXPB5 (AF332178), ZmEXPB6 (AF332179), ZmEXPB7 (AF332180), and ZmEXPB8 (AF332181). ZmEXPB6 was identified by the underlined peptide sequence TGAGPLDNG by mass spectrometry analysis of proteins extracted from a PVDF blotting membrane. B, 19 fragmentation spectra of peptide 730.29 (2+) were recorded in positive ion modus with an ion score of 5.12E3, and spectra were combined for peptide sequence analysis.